When Upgrading Windows XP to Vista, the Vista-compatibility report recognizes Novell Client 4.91x as non-compatible application. Although the Novell Client has been completely removed, the Vista Upgrade-compatibility-check still finds the Novell Client????? stopping any further possibilities to upgrade the operating system.

There were still some entries in the registry (HKEYLM/SOFTWARE/NOVELL) which i've manually removed - without success!

Any ideas???